Question

The population of a municipality before 2 years was 60,000 and the rate of annual growth of population is 2%. If the numbers of in-migrants and out-migrants at the end of 2 years were 750 and 410 respectively and 620 people died within this time interval, find the present population of the municipality.​

Answer 1

62,144

Explanation:

60,000 x (1 + 2%)^2 : growth in 2 years

+ 750: in migrants

- 410: out migrants

- 620: died

Answer 2

62,144

Explanation:

`60,000 * (1 + 2\%)^(2)`

➡️
`= 62,424`

In-migrants:

➡️
`750 - 410 = 340`

now:

`62,424 + 340 - 620`

➡️
`= 62,144`

So, the present of the municipality is 62,144